Verichrome Pan in PMK 1+1+100 70 degree distilled water for 10 minutes with constant agitation (by gently rolling the tank back and forth in the sink) is the best I have found for cold light enlarging. It took me a bit of time to figure this out but the results are amazing. I also highly recommend HP5+, same dilution,technique, for 14 minutes. My negatives print perfectly with no filter. You should test before doing anything important. Good luck.(posted 8505 days ago)